2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

oil and gas don't mix

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Old Mar 8, 2006 | 09:52 PM
  #1  
gear_grinder's Avatar
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Don't hate my V8
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From: Cornfield, Indiana
Exclamation oil and gas don't mix

whats up this is my first post ever on this web site and geuss what. i've got some questions

I have an 87 rx7 TII w/ 124000 miles (stock 13b)

1. some how gas keeps creeping into my oil. i found out the hard way when i lost compretion. i changed the oil and filter, took the plugs out for 24 hrs and put some wd-40 in the turbo and spark plug wholes and got compreation back. i have drove it twice (total of aprox 20 miles) and the oil is starting to smell like gas again.

2. my fuel pump seem to be dumping a ton of feul into my motor. is thier some sort of regulator that is broken or is it normal? (maybe this could have something to do w/ no. 1)

3. do u have any info on were i can get a full rebild kit for my motor?

from the maste of disaster
peace out
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Old Mar 8, 2006 | 10:02 PM
  #2  
SureShot's Avatar
Seduced by the DARK SIDE
Tenured Member 15 Years
 
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From: Orange Park FL (near Jax)
Welcome to the forum.
Take some time to read through the FAQ threads pinned at the top of the forum.
The Factory manuals are available on-line.
I have a copy at the link in my sig below.
Download & print whatever you need.

About your question:
The ONLY way gas can get into the oil is through a leaking fuel injector.
Read the plugs to see if one or both rotors is/are running way rich.

Most diesel injector shops can also clean & test gas injectors.

That's pretty high miles for an original turbo motor.
Is there a chance it may have already been rebuilt or swapped?
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Old Mar 8, 2006 | 10:05 PM
  #3  
spot_skater's Avatar
The Cause of Death
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From: New York
Gas in your oil? As in, it doesn't just smell like gas when you change the oil, but there is literally oil IN the gas?? Check the fuel injectors.

Fuel pressure regulator controls fuel pressure, along with the fuel pump, and size of the lines.

Mazda sells OEM seals. Rotary Aviation sells rebuild kits. There's a bunch out there. Google. Or search.

I'm sure other people will be able to answer your question on the rebuild kits, and maybe go into further depth about your fuel "problem." Which may or may not be a problem, these cars tend to run very rich, to prevent detonation.

Read the FAQ and archives, too. There's seriously a TON of information in here.

Welcome to the club!!

James
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Old Mar 8, 2006 | 10:21 PM
  #4  
gear_grinder's Avatar
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Don't hate my V8
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From: Cornfield, Indiana
yo yo

ive got a repair manual from auto zone already.

i no both rotors are running super rich

100% original motor
got it from a guy at work that had it sence like 35k miles and didn't want it any more (and it had a bad clutch).
so far ive got stage one racing clutch in it.
kustom painted the intior (red)
racing pedals (red/chrome)
wire loom (red)
hard wired intior neon (red)

when its running good she hauls *****

so far i've beat

2 escorts
1 caviler
2 minivans
3 small pickup trucks (two rangers, one s10)
1 rustang (mustang)
2 camaros (one from the 80s and the other from the 90s)
1 full size (1/2) ton truck w/ a 350 (chevy)

i totaly destroyed all of these cars in straght up street races

the fastest ive had it was aprox 130, but it was right after i put the new clutch in is and the tires were unbalenced and it shook like crazy

come again?
stay cool

ps u can see my car at cardomain.com and search the name rotory_boy_turbo
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Old Mar 8, 2006 | 10:26 PM
  #5  
KeloidJonesJr.'s Avatar
strictly business
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From: chamber of farts
good way to premix try the OMP
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Old Mar 8, 2006 | 10:27 PM
  #6  
spot_skater's Avatar
The Cause of Death
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From: New York
Ditch the neons.

This forum doesn't take kindly to rice.

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Old Mar 8, 2006 | 10:38 PM
  #7  
I wish I was driving!
Tenured Member 20 Years
 
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From: BC, Canada
Originally Posted by SureShot
About your question:
The ONLY way gas can get into the oil is through a leaking fuel injector.
Actually, its usually caused by combustion chamber blowby caused by a well worn engine.
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Old Mar 8, 2006 | 11:46 PM
  #8  
88turbotime's Avatar
I'd hit it.
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From: Texas
Originally Posted by gear_grinder
so far ive got stage one racing clutch in it.
kustom painted the intior (red)
racing pedals (red/chrome)
wire loom (red)
hard wired intior neon (red)
Oh boy here we go. Im putting on 2 flame suits for this one.
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